Officially, Apollo 17 launched December 17th, 1972 and was the last manned mission to the moon. But a year later two American astronauts were sent on a secret mission to the moon funded by the US Department of Defense. This is the actual footage captured by the astronauts on that mission. While NASA denies its authenticity, others say it's the real reason we've never gone back to the moon. Starring Warren Christie (TV's ALPHAS).